How many cles should I take my freshman year?

I am a high school senior I have above average grades, but not amazing or anything. I've always been a bit of an over achiever and I get bored easily in high school so I take cles at community college as well and play varsity sports. I also have a job. I like to be very busy but i don't want to 'burn out' my freshman year or get overwhelmed. I want to be accepted into the nursing program so I am afraid that if I take too many cles I will not get good grades. I want to hold a job in college too. I'm not sure what the cles will be like at a university and I'm a little worried I won't be able to keep up. What are your suggestions?